Fastening-pulling machine



Filed June 10, 1924 Patented June 2, 1931 UNITED STATES PATENT oFFice I IERIZD L. MACKENZIE, OF BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MA- CHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY FASTENING-PULLING MACHINE Application filed June 10,

T his invention relates to machines for drawing fastenings from various articles, as those for pulling the temporary securing tacks from the uppers and insoles of shoes.

5 Various novel features embodied in the mechanism herein illustrated for pulling in solo tacks are not claimed herein but are claimed in a copending application Serial 477,934, filed August 26, 1930, in my name. I

The invention has as an object the provision of effective means for guiding the work to present the tacks to be pulled to the memher which is to operate upon them, and for preventing injury of the work by such member. Tothis end, I combine with this pulling member or tool a member extending between it and the work, together with a gage or guide co-operating with said members. The intermediate member acts as a guard to limit the extent to which the work may approach the tool, thus positioning the work in this di motion or vertically, and also serves as a holddown or abutment resisting the pulling action of the tool. The gage preferably enters the insole-channel of the shoe operated upon and guides it both horizontally and vertically. The guard is normally held in proximity m to the tool, being permittedto yield therefrom. This is of utility, regardless of the presence or absence of the channel-guide, it allowing suchobjects as tacks-which may have entered between the tool and guard to escape withp out injuring the elements of the machine. I I also prefer to have the channel-guide yield, thus facilitating the correct presentation of the work to the pulling tool. As herein illustrated, the gage members co-operating with the tack-pulling tool, as the guardand channel-guide, are mounted to move about a common axis, as a supporting spindle, this giving a simple and compact structure.

It is a further object of the invention to furnish a tack-pulling machine universal in character; that is, one which may readily be made to respond to all usual operating requirements. Manufacturers desire, for example, before sewing on the welt of a shoe, to remove the side tacks used in securing the upper during lasting, and, before applying 1924. Serial No. 719,076.

the bottom-filleiy to draw the tacks which hold the insole to the last. It is customary to supply, for these purposes, entirely independent machines. Then, too, a shop may be equipped for driving its machines from counter-shafting, or may employ the individual motor driving system. To meet these demands, I provide a convertible machine, which, by simple changes, may be utilized as an upper-tack-puller or an insol'e-tack-puller, and also one which may be driven by belting or by motor. As to the first, pulling tools of different characters, as those for the upper and insole operations, and gage members, which best co-operate with the respective tools, are made interchangeable, the former beingseparably secured to an operating member, and the latter mounted upon inter-- changeable frame-extensions separable from the main frame. As to the second require-- ment, themachine frame may have base, carrier and arm-portions, the carrier being separable from the base and the arm being separably secured upon the carrier-portion and furnishing a support for the tack-pulling tool and its operating member. In the carrierportion, the motor means for the operating member is journaled, this consisting for example, of an electric mot-or or a suitably driven'shaft. With such an organization, the desired motor means mounted upon a carrierportion best adaptedfor its support may be interposed between the base and arm. This and the previously-described conversion, to provide for different tack-pulling operations, allow the maker of the machine to meet the needs of various shoe-manufacturers with comparatively slight expense over that involved in the production of a single type of machine.

Certain embodiments of my invention are illustrated in the accompanying drawings, in which Fig. 1 is a side elevation of my improved machine particularly arranged for the pulling of insole-tacks;

Fig. 2 is a partial vertical section through the driving shaft, with which is associated an electric motor;

Fig. 3 illustrates, in front elevation, the

tack-pulling tool and gage members of Fig. 1

Fig. 4 shows, in side elevation, the workengaging elements of the machine arranged for the pulling of lasting tacks;

Fig. 5 is a perspective view of the construction illustrated in Fig. 4, with parts broken away; and

Fig. 6 is a view corresponding to Fig.v 2,

showing the machine organized to be driven,

by a belt.

At 10 appears the base-portion of a frame in the form of a column, the upper extremity only being illustrated in the drawings. Upon this base-portion is secured a carrierportion, consisting of an upstanding bracket 12 offset to one side of the vertical axis of the column. At the upper end of this bracket is a generally cylindrical head 14 having its axis located horizontally, and with a bore 16 extending along this axis and arranged to receive a journal-bearing. Attached to the side of the head over the column is a hollow frame-arm 18 extending slightly upward and then forward clear of the column. Within this head is mounted an operating lever 20 hung near its center for oscillation upon a link 22 pivoted upon lugs 24 depending from the upper side of the interior of the arm. At its extremity outside the arm, the lever is provided with clamping means consisting of a divided socket to receive the shank of a tack-pulling tool, such as is shown at 26 (Figs. 1 and 3), or at 28 (Figs. 4 and 5). Screws 30, extending horizontally through the lever, serve to drawthe opposite sides of the socket together to clamp the tool in place.

The inner end of the arm 20 carries astrap 32 surrounding an eccentric 34. As particularly illustrated in Fig. 2, the eccentric is mounted upon a tubular spindle 36 having hearings in bushings 38, 38 situated in the bore 16 and in an al'ined bore 40 at the outer side of the arm 18. The eccentric may be counterbalanced by a weight 41 projecting from the spindle 36 at the side opposite'the major radius of the eccentric. Attached to the outer face of the head-14, opposite the arm 18, is the casing of a motor 42, preferably electrical. The shaft-44 of this motor is axially alined with the spindle 36, and extends into it at 46. The shaft 44 is keyed to the spindle at 48, and isheld against longitudinal movement in the direction of the arm by a flange 50, while a screw 52, threaded into the shaft and having a washer beneath its head abutting against the outer extremity of the spindle, draws the flange into contact with the spindle, holding these elements firmly connected. The thus-furnished bearing common to the eccentric and motorshafts gives a simple and compact arrange ment, insuring e'fl'ective coupling and perfect alinement. Lateral play of the motorarmature in axial directions in centering itreozsss self in its magnetic field is permitted by longitudinal movement of the eccentric-spindle 36, there being space to permit this between the adjacent ends of the bushings 38. The lever 20 is prevented from sharing in this movement by cheek-pieces 51, 51 formed upon the interior of the arm 18, and between which the lever slides. The lower portion of the arm maybe formed. as an oil-chamber, in which the eccentric dips in its rotation, the counterbalance weight 41 splashing the oil out into the arm to lubricate the bearings between the lever 20 and the cheek pieces 51 and between said lever and the link 22. The depth of oil in the chamber is determined by a gage 53, while a cock 54 is provided, through which the chamber may be emptied. A flange 55 is shown about the lever 20 just within the outer extremity of the arm, this furnishing a shield tending to exclude tacks from the arm and tending to prevent'the spattering of oil on the work or the flow of oil along the lever 20.

If it is necessary to furnish a belt-driven rather than a motor-driven machine, the arm 18, with the operating lever 20, is removed from the head14-of the carrier-portion of the frame, and the latter, with its motor,

is separated from the column '10. Upon this column is then secured another carrier-portion 58 (Fig.6) of the same general character as the carrier portion consisting of the bracket 12, having journaled in it'at- 60 a shaft 62, upon the outer end of which is secured a pulley 64. The opposite extremity of the shaft has fast upon it an eccentric 66, preferably made the same size asthe eccentric 34 and counter balanced by a weight 41 similarly to the eccentric 34. The arm 18 is then attached to the carrier-portion 58, thebushing 38 ofthe arm receiving the end of the shaft- 62 outside the eccentric. It will thus be seen that, to change the motor means from one form to another, there is only involved the substitution of an intermediate carrier portion or frame carrying the chosen driving mechanism, each of these substitute organizations constituting a unit. The eccentrics embodied in these units are each arranged to fit the eccentric'strap 32 of the tool carrying arm 20.

1f the machine is to be employed to pull lasting tacks T, such as are shown in the shoe S in Fig. 5, the previously-mentioned tool 28 is clamped in place at the outer extremity of the arm 20, held by the screws 30. This tool may be in the form of a claw having downwardly and forwardly extending projections 70, between which are V-shaped depressions to receive-the shanks of the tacks to be pulled, the heads of these resting upon the upper sides of the projections. Under the influence of the lever 20, this tool travels in a substantially ovate path, so that, in its active stroke, it passes down in advancingtoward the tack and finally sharply up, while still slightly to be pulled. then more gradually down and at the same time forward, until the shank of the tack is between two of the projections,

continuing its forward movement to witl draw the tack from the work.

The curved end face 72 of the tool operates over a gage member 74, which extending b 1 tween the pulling member and the work, also serves as a guard for the upper-stock and as a hold-down resisting the movement of the shoe as the tool applies the pulling force. This gage and guard member 74 is at the bottom of the path of the tool, and is curved to conform to its movement. Over the forward gage edge 7 5, the tool moves into engagement with the tacks, which are preferably advanced into pulling position along a line which may be substantially at right angles to this edge or slightly less than 90 degrees as indicated by the dot and dash lines in Fig. 5. From the gage member 74 rises a shank 76 entering a vertical guide-way 78 in a substantially horizontal guard arm 80 pivoted at 82 upon an extension or nose-piece 84 of the arm 18. A spring 86 surrounds the pivot of the arm, acting to hold the member 7 4 in its normal elevated position, adjacent to the tool 28 when this is at its lower limit of movement. This position of the gage, under the influence of the spring, may be fixed by contact of the upper portion of the arm 80 with the under side of the extension 84. A slot-and-screw connection 88 allows the shank 76 to be raised and lowered,- to locate the member 74 at the desired normal distance from the tool 28. From its elevated position, the guard may be depressed against the tension of the spring, if tacks or other objects become lodged between it and the tool. In this way, breakage of both the guard and tool is prevented. The shank has at its lower portion, extending forwardly beyond the edge 75 of the guard, a projection 90, rounded at its end. This is adapted to contact with the edge of the upper which is left loose inside the line of tacks to be pulled, and hold this down out of the way of the tool in its pulling stroke. At the side of the guard member opposite the shank rises a wall 92, which tends to prevent the hands of the operator coming in contact with the tool.

Pivoted upon the extensionv 84 with the guard-arm 80, preferably to turn about the same axis. is a guide arm 94, curved down at one side of and in advance of the guard 7 4. At its lowerend, the arm 94 has a substantially horizontal flattened portion 96 of generally circular contour constituting a guide or holddown positioned adjacent to the projection laterally of and be ond the terminus of the edge '75 of the guard '74. This guide 96 extends along an imaginar line of? set from the path of oscillation of the tool tending substantially in the direction path. iii-'5 guide 96 is adapted to engage a characteristic part of the wor example, to enter the channel of the shoe ing operated upon and to guide the line of tacks into the path of the tool 28. The work may be tilted up or down or laterally about the guide 96 to present the tacks to the best advantage for their *ithdrawal from the work. If the tacks are not deeply driven, their stems as they are advanced will be substantially in line with the approaching end of the tool. If, on the other hand, the tacks are deeply driven, their heads may be positioned below the forward edge of the tool 28 in which case the outer extremity of the work may be raised, thus causing the en gagement of the tool with a tack to be more directly toward the upper-material, to insure the passage of the projections 70 beneath the head of the tack. Or, the rear portion of the work may be swung by the operator to the left or right, to bring the advancing tack properly between the projections which are to engage its head. 'l. he former movement of the work, or that which is substantially vertical, may be facilitated by the movement of the arm 94 it rotates about its axis. To maintain it normally against movement in this last-mentioned direction, this arm 94 is held yieldingly in its normal intermediate position by a plunger 98 press-ed by a helical spring 100 against surfaces 104. The spring is situated between the plunger and a plug 102 threaded into the top of the frame-extension 84. I prefer to downwardly and oppositely incline the surfaces 104 longitudinally of the arm, these inclined portions converging to a line beneath the plunger. This facili tates the centering of the arm in its return to its normal intermediate position after it has been raised or lowered by the pressure of the work. V] hen it is desired to give free access to the tool 28'and guard 74,.thc arm 94 may be swung rearwardly to a generally vertical position, the plunger at this time being forced off the surfaces 104 and riding over a curved surface 106 at the outer end of the arm. Turning the arm oppositel or in av clockwisedirection, as viewed in 5 of the drawings, restores the arm 94 to its ope .ating position, the plunger then seating itself in they depression of the surface 104.

In pulling the side-lasting tacks with this machine, as appears in Fig. 5, the channel of the insole is caused to engage the guide 96 on the guide arm 94, and the work advanced with the line of tacks substantially in a vertical plane intersecting the path of movement of the tool. If desired, the operator may somewhat incline the work, twisting it about a vertical axis through the end 96 so that the line of tacks travel at a slight angle from the right. This prevents the projections 70 of the claw from catching beneath the edge of the upper. This edge, however, is effectively held out of the path of the prowardly and outwardly beneath the head of the tack, and then rises to pull this from the upper-material, which is held from following the tool by the action of the guard as an abutment. If a withdrawn tack or other object enters between the tool and guard, the latter is lowered, as a result of the yield of the ispring 86, allowing the object to free itsel By a change. in the pulling tool and its 7 associated gage members, the machine may be organized to act upon the tacks, as those illustrated at t in Fig. 3, which secure an insole I to a shoe. For the claw 28 is substituted a gouge-shaped tool 26 adapted to dig under the head of an insole-tack, these commonly being more deeply driven than the lasting tacks. The forward extremity 84 of the frame, previously described, is secured to the arm 18 for ready separation by screws 110, and this is removed with the gage Tel and guide 96 and their supporting and controlling elements which it carries, and replaced by an extension 112. Adjustably fixed to the forward wall of this extension by a slot-and-screw connection 114 is an inclined arm 116, having at its lower end a gage-roll 118 rotatable about a horizontal axis and with the bottom of its periphery located just at one side of the path of movement of the tool 26 and. somewhat above the lowest point to which said tool descends. Joined to the arm 116 by a slot-and-screw connection 120 is a gage member 122, situated in close proximity to the opposite side of the tool from the roll 118 and having its lower extremity, with which the work contacts, at a somewhat greater height than is the bottom of the roll.

In pulling insole-tacks with the machine organized as ust described, the operator may advance the work along the roll 118 in a nearly horizontal position. the rotation of the roll upon its arm permitting the guiding action with but little resistance to movement. The travel of the member 26 may be substantially the same as that already described in connection with the tool 28, this causing it to be directed downwardly and forwardly, forcing its curved point into the upper surface of the insole beneath the head of thetack, and then rising, still with a somewhat forward movement, to withdraw this. If the tack to be pulled is more deeply driven, so that, with the insole held horizontally in a lateral direction, the stroke of the tool would not be deep enough properly to engage the tack, the work may be tilted up at the right side, as seen in Fig. 3', upon the roll 118 as a rest toward the gage 122. This causes the tool to he more deeply projected into the work, and thus more effectively engage the tack. Destructive effect of the tool upon the insole-material is prevented by contact of the work with the gage 122, this being adjusted by its connection 120 as may be necessaryto limit the digging of the tool into the work. Obviously, the operator may modify this tack-engaging action to any degree, between the lightest contact of the tool with the insole, when the side of the work removed from the roll may be horizontal or even inclined downwardly, and the maximum engagement, when the insole has bee-n raised into contact with the gage member 122.

It will be observed that the conversion of the machine for operating upon the different classes of work calls only for the interchange of the pulling tools and the gage members carried by the frame-extensions, these being secured in place by but four screws.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for pulling lasting tacks, arranged in rows in the channeled soles of boots and shoes, an oscillatory fasteningpulling member arranged for movement in the line of the row of tacks, a work guarding and supporting member extending between the pulling member and the work, and a work-guide co-operating with said members having a narrow end extending in front of the pulling member and adapted to be positioned in the channel of a sole substantially in line with the pulling member, said work guide being yieldably mounted to allow tilting of the shoe to facilitate the presentation of tacks to the pulling member.

2. In .a machine of the class described, a fastening-pulling member, a guard member extending between the pullingmember and the work, and means arranged to hold the guard member normally in proximity to the pulling member and to permit it to yield away from said pulling member in a direction to release any interposed foreign substance.

3. In a machine for pulling lasting tacks, a fastening-pulling member, a downwardly yieldable guard member extending between the pulling member and the work, and an upwardly yieldable guide having a reduced end for engagement with the channel of the sole of a shoe.

4;. In a machine for pulling lasting tacks arranged in rows in shoes, an oscillatory tool, movable in the line of a row of tacks, a workguard and hold-down co-operating with said tool, means for moving the guard and holddown with respect to the tool, and a guide having a reduced end slightly off-set from but close to the path of oscillation of the tool and being constructed and arranged to enter the channel of the sole of the shoe in front of the tool, said guide co-operating with the tool and arranged to yield under the pressure of the work to enable the operator to Vary the position of the shoe with respect to the path of the tool.

5. In a tack-pulling machine, a pulling member, and a plurality of members arranged to contact with the work and to move independently about a common axis.

6. In a tack-pulling machine, a pulling member, a spindle, a plurality of workengaging members adapted to control the position of the work and arranged to turn independently about the axis of said spindle away from a normal position, and springs -acting upon said work-engaging member tending to hold them in their normal positions.

7. In a tack-pulling machine, an oscillatory claw, a rotatable arm, a. spring acting upon the arm arranged to hold it in a predetermined position adjacent to the path of movement of the claw, and a work guarding member mounted upon the arm constructed and arranged to be adjust-ably positioned thereon so as variably to determine the relation of the path of movement to the work and yieldable away from the claw to release a tack.

8. In a machine for pulling lasting tacks arranged in rows in the channeled soles of boots and shoes, an oscillatory claw, a rotatable arm, a spring acting upon the arm, a guard member adjustably mounted upon the arm to contact with and protect the work from injury by the claw, and a yieldable guide cooperating with the claw and guard member, said guide being arranged for contact with the channel of a shoe sole and having a laterally hooked end arranged to enter '2 said channel when the row of tacks is in line with the direction of oscillation of the claw.

9. In a tack-pulling machine, a pulling member, a member guiding the work and movable in opposite directions from a'hormal intermediate position, and means tending to prevent displacement from said normal position, said guide member being movable in one direction to an inoperative position where it is out of its guiding relation to the work.

10. In a tack-pulling machine, a pulling member, a pivoted guide-arm adjacent thereto, and a spring-pressed member slidably contacting with the arm in proximity to the pivot constructed and arranged to oppose rotation of said guide arm around its pivot in either direction.

11. In a tack-pulling machine, an oscillatory tool, a movable guard member normally positioned near the tool and having a wall over which the tool operates, and a spring arranged to urge the guard member toward the tool to its normal posit-ion.

12. In a tack-pulling machine, an oscillatory tool, and a movable guard member having a lower wall over which the tool operates and a wall rising at each side of said lower wall, one of said walls extending forwardly beyond the lower wall and laterally thereof.

13. In a machine for pulling lasting tacks from shoes, an oscillatory claw, and a guide member having a portion thereof arranged for engagementwith the bottom of the channel of the sole of a shoe along a line extending in the direction of the path of oscillation of the claw but offset laterally therefrom for guiding successive tacks into the path of theclaw.

14. In a machine for pulling lasting tacks from shoes, an oscillatory claw, a guard memher having a forward edge over which the claw moves, and a channel-guide bent down and in so that its work engaging portion is arranged laterally beyond the terminus of said edge of the guard member and extends substantially in the direction of the path of oscillation of the claw for engaging the bottom of the channel of a shoe sole as a line of tacks is moved toward the claw.

15. In a tack-pulling machine, an oscillatory claw, a guard member having a forward edge over which the claw moves and a forward extension at one side of said edge, and a channel-guide situated adjacent to said extension.

16. In a tack-pulling machine, a frame having an outwardly projecting arm, an operating lever movable upon the arm, securing means at the outer extremity of the lever arranged to hold different forms of tack-pulling tools interchangeably, and securing means at the outer extremity of the framearm arranged to hold interchangeably frameextensions provided with gage members adapted for co-operation with the particular pulling tool applied to the lever.

17. In a tack-pulling machine, a frame having a base-portion, a carrier-portion separably secured to the base-portion and an arm separably secured to the carrier-portion, an operating member movable upon the arm, a tack-pulling tool fixed upon the operating member, motor means journaled in the car rier-portion of the frame, and connections between the motor means and operating member.

18. In a tack-pulling machine, a frame having a base-portion, a carrier-portion separably secured to the base-portion and an arm separably secured to the carrier-portion, an'operating member movable upon the arm, a tack-pulling tool fixed upon the operating member, an electric motor mounted upon the carrier-portion of the frame, eccentric mechanism situated in the arm for actuating the operating member, and connections between the motor and eccentric mechanism.

19. In tack-pulling machine, a frame having a base-portion, a carrier-portion separably secured to the base-portion and an arm separably secured to the carrierportion.

an operating member movable upon the arm, a tack-pulling tool fixed upon the operating member, a tubular spindle journaled in the arm and carrier-portion of the frame, an eccentric upon said spindle arranged to actuate the operating member, and an electric motor mounted upon the carrier portion of the frame and having its shaft extending into the tubular spindle and secured thereto.

20. Ina tack-pulling machine, a frame, an operating member movable thereon, a tack-pulling tool operated by said member, a tubular spindle ournaled in the frame, actuating means for the operating member carried by the spindle, and a motor mounted upon the frame and having its shaft extending into the spindle and secured thereto.

21. In a tack-pulling machine, a frame, a lever fulcrumed thereon, a tack-pulling tool fixed to the lever, a tubular spindle journaled in the frame, an eccentric fixed to the spindle and connected to the lever, and an electric motor mounted upon the frame and having its shaft extending into the spindle andiixed thereto.

In testimony whereof I have signed my name to this specification.

FRED L. MACKENZIE. 

